Sub-species
subsp. involucrata
This perennial varies from the species in having green and white bracts that are twice as long as the flower-head.

Cultivars
'Claret'   
This herbaceous stoloniferous perennial grows to 600 mm (24 in) tall by 450 mm (18 in) wide forming a clumping habit with deep green foliage. From late spring to early summer it produces dark red starry flower heads high above the foliage on blackish stems.

It prefers an open sunny to partially shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils. It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried. It grows in USDA zones 4-7.

'Gill Richardson Group'
This herbaceous stoloniferous perennial grows to 700 mm (28 in) tall by 450 mm (18 in) wide forming a clumping habit with deep green dissected foliage. From early to mid-summer producing deep crimson to dark red shaggy flower heads high above the foliage on a slender stem. 

It prefers a semi-shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils. It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried and grow in USDA zones 4-9.

'Hadspen Blood'
This herbaceous stoloniferous perennial grows to 1m (3 ft) tall by 450 mm (18 in) wide forming a clumping habit with deep green dissected foliage. From early to mid-summer producing dark red to sepia flower heads high above the foliage on a slender branched stem. 

It prefers an open sunny to semi-shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils. It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried and grow in USDA zones 4-9.

'Rosensinfonie'
This herbaceous stoloniferous perennial grows to 750 mm (30 in) tall by 600 mm (24 in) wide forming a clumping habit with mid-green dissected foliage. During summer producing claret red to pink flower heads high above the foliage on a slender branched stem. 

It prefers an open sunny to semi-shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils that are tending acidic. It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried and grow in USDA zones 5-7.

'Ruby Wedding'  Red Masterwort
This herbaceous stoloniferous perennial grows to 700 mm (28 in) tall by 600 mm (24 in) wide forming a clumping habit with deep green foliage. From early summer to autumn it produces claret-red starry flower heads high above the foliage. 

It prefers an open sunny to partially shaded wind protected position and will grow in most well-drained organic rich moist soils.  It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried.  It grows in USDA zones 3-9.

'Shaggy'
This herbaceous stoloniferous perennial grows to 1m (3 ft) tall by 450 mm (18 in) wide forming a clumping habit with deep green dissected foliage. During summer it had producing greenish-white flower heads with whitish bracts that are tipped in green, high above the foliage on a slender branched green stem. 

It prefers an open sunny to semi-shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils. It is planted in perennial borders or beds and the flowers are used in floral arrangements either fresh or dried and grows in USDA zones 4-9.

'Sunningdale Variegated'
This herbaceous stoloniferous perennial grows to 750 mm (30 in) tall by 600 mm (24 in) wide forming a clumping habit with deep green dissected foliage with central yellow blotches or margins. From early to mid-summer producing starry, creamy white flower heads with pointed white bracts high above the foliage on a slender branched stem. 

It prefers an open sunny to semi-shaded wind protected position and will grow in most well-drained organic rich, reliably moist soils. It is planted in perennial borders and the flowers are used in floral arrangements either fresh or dried and grow in USDA zones 4-7.